Vein-expander and drain-tube



M. A. URYE. VEIN EXPANDER AND RAIN TUBE.-

APPucATxoN FILED SEPT. 3, 1919.

Patented Jam 11, i921.

INVENTOR /Vgymzrd /Zza'Lz/e@ UNITED smiles 1 ura1vrg OFFICE.

MAYNARD A. DURYEA, or NUNDA, NEW YORK.

VEIN-EXPANDER AND DRAIN-TUBE. y

Specification of Letters Patent.

Patented Jan. 11, 1921.

Application ledlseptember 3, 1919. Serial No. 321,354.

To all whom t may concern.'

Be it lrnown that I, MAYNARD A. DURYEA, a citizen et the United States,residing at Nunda, in the county of Livingston and State of New York,have invented certain v convenient drain tube or drain tube pointadapted tor attachment to a conductor pipe and adapted to be inserted ina vein and then expanded so that the walls ot the vein are distended andthe contents are more readily forced out. Further objects are to providea device ot this character that is readily cleaned and one that can beproduced at a low cost. To these and other ends the invention consistsin certain improvements and combinations of parts all as will behereinafter more fully described,

the novel features being pointed out in the claims at the end of thespecilication.

In the drawings Figure 1 is a side view of a device con structed inaccordance with and illustrating one embodiment of my invention, theparts thereof being in normal position.

Fig. 2 is a longitudinal central section therethrough with the parts inexpanded position.

Fig. 3 is an enlarged transverse section on the line 3 3 of Fig. 1, and

Fig. 4 is an enlarged Atransverse section on the line le-4C of Fig. 1.

Similar reference numerals throughout the several views indicate thesame parts.

My device has the general form of a split tube A tapered toward the endB at which it is rounded and comes almost to a point. The tube ispreferably made in two separable parts 1 and 2. The part 1 comprises anipple 3 for the attachment of the ordinary rubber conveyer tubeindicated at 4 in Fig. 1. Beyond the nipple there is an intermedidiatetubular portion 5 ot a preferably enlarged diameter and of ellipticalform, the increased diameter being eccentric providing a straight sideandan enlarged side or raised portion 6. Beyond the tubular portion 5thisApart of the tube is reduced to the semi-tubularform indicated at 7such reduced portion being taperedto a gradually diminishing diameterpreserving, however, fthe elliptical or semielliptical cross section asshown in Fig. 1. l

The other part 2 of the tube is also semitubular and tapered in much thesame manner the portion 7 ,l but its curvature is on greater radii sothat its `edges normally overlap ythose of the yportion 7 of the otherpart all the way down to the tapered end B as shown in Fig. l and asindicated in dotted Alines in Fig. l. The larger end 8 oic this part 2embraces and partially surrounds the intermediate tubular portion 5 or"the part 1 on the side of the enlargement 6. This enlargement is iittedwith a threaded post 9 that engages in an aperture lO'in the portion 2holding the two parts of the tube together and a thumb nut 11 on thepost engages against the part 2 to produce relative movement, laterally,of the parts 1 and 2. The intermediate tubular portion 5 of the part 1is not tapered, but when the thumb nut 11 is loosened, as in Fig. 1, thepart 2 tilts or rocks on the end of the tubular portion 5 and closes theparts together, as shown in Fig. 1, so that the edges overlap and thedevice as a whole constitutes a continuous `closed tapered body. Vhenthe thumb nut is tightened, as in Fig. 2, the apertured portion of thepart 2 straightens out on the enlargement 6 and expands or separates thetapered portions of the semi tubular parts.

It will be noted that the expanding of the tube causes no separationfrom the point indicated at C on, the tube being closed from there tothe nipple 3 and a continuous conducting passage being provided. In use,the device is inserted in the vein upto or beyond this point while inthe closed condition of Fig. 1, the small end B being easily pushed in.The subsequent tightening of the thumb nut 11 stretches the vein to afree flowing capacity and also causes it to clamp tightly about the tubewithout danger of disconnection.

It is obvious that the parts may be readily separated for cleaningpurposes.

I claim as my invention:

1. A vein expander comprising a tapered tube composed of two parts oneof which embodies a nipple, a tubular portion and a semi-tubular portionand the other of which consists of a semi-tubular portion.

2. A vein expander comprising a tapered tube composed of two separableparts one of which embodies a nipple, a tubular portion and asemi-tubular portion, the tubular portion being provided with a post,and the other of which consists of a semi-tubular portion adapted torock on the tubular portion of the irst mentioned part and provided withan aperture engaging over the post.

3. A vein expander comprising a tapered tube composed of two parts oneof which embodies a nipple, a tubular portion and a semi-tubularportion, the tubular portion being provided with a post, and the otherof which consists of a semi-tubular portion adapted to rock on thetubular portion of the rst mentioned part and provided with an apertureengaging over the post and means on the post for rocking the semitubularpart.

4. A vein expander comprising a split tapered tube, a mechanism at thelarger end of said tube for adjusting the separation of the splitportion of said tube at the other end, said mechanism being operablefrom the side of the tube.

5. A split tapered tube comprising two main portions, one of whichembodies a nipple at one end, a semi-tubular tapering part at the otherend, a tubular part between the nipple and semi-tubular parts, the othermain portion being semi-tubular, tapering at one end, and pivotallymounted on the tubular part of the iirst mentioned main portion, andmeans mounted on the tubular part of the iirst named main portion forpivotally moving one main part relative to the other to expand andcontract the tapered end of the split tube.

MAYNARD A. DURYEA.

